7680891 has 4 divisors (see below), whose sum is σ = 10241192. Its totient is φ = 5120592.

The previous prime is 7680887. The next prime is 7680929. The reversal of 7680891 is 1980867.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 7680891 - 2² = 7680887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7680811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1280146 + ... + 1280151.

It is an arithmetic number, because the mean of its divisors is an integer number (2560298).

Almost surely, 2^7680891 is an apocalyptic number.

7680891 is a deficient number, since it is larger than the sum of its proper divisors (2560301).

7680891 is a wasteful number, since it uses less digits than its factorization.

7680891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560300.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 7680891 is about 2771.4420434135. The cubic root of 7680891 is about 197.3045954950.

The spelling of 7680891 in words is "seven million, six hundred eighty thousand, eight hundred ninety-one".